Science : Ch 11 – The Human Eye and the Colourful World

At noon, the Sun looks white as:

A clear sky appears blue, because:

The danger signals installed at the top of tall buildings are red in colour. These can be easily seen from a distance because among all other colours, the red light:

In an experiment to trace the path of a ray of light through a triangular glass prism, a student would observe that the emergent ray

The sun appears red at sunset or sunrise. Choose the incorrect statement from the following

When sunlight passes through a canopy of a dense forest, tiny water droplets in the water scatter light.This is an example of

Power of a lens is

The splitting of light into its component colours is called

Why is red used as the stopping light at traffic signals?

The defect in a person can see nearby objects but not far away objects

The defect the eye cannot focus objects both horizontally and vertically at the same time

When a person can see faraway objects but not nearby objects.

A concave lens of short focal length has greater

The emergent ray in a prism bend at an angle to the direction of the

The colour of the clear sky blue due to